A control system for a construction vehicle, such as a motor grader, is provided. The control system includes a plurality of joysticks supported by an operator seat assembly of the motor grader....http://www.google.es/patents/US20090223735?utm_source=gb-gplus-sharePatente US20090223735 - JOYSTICK CONFIGURATION
Número de solicitud: 12/257,961 Número de publicación: US 2009/0223735 A1 Fecha de presentación: 24 Oct 2008 Patente emitida: US8146704 ( Fecha de emisión 3 Abr 2012)
